JPH0430603A - Dielectric filter - Google Patents
Dielectric filterInfo
- Publication number
- JPH0430603A JPH0430603A JP13505290A JP13505290A JPH0430603A JP H0430603 A JPH0430603 A JP H0430603A JP 13505290 A JP13505290 A JP 13505290A JP 13505290 A JP13505290 A JP 13505290A JP H0430603 A JPH0430603 A JP H0430603A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- electrodes
- coupling capacitor
- output
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 51
- 230000008878 coupling Effects 0.000 claims abstract description 38
- 238000010168 coupling process Methods 0.000 claims abstract description 38
- 238000005859 coupling reaction Methods 0.000 claims abstract description 38
- 239000000758 substrate Substances 0.000 claims description 21
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 238000005476 soldering Methods 0.000 abstract description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は携帯電話等の移動通信機器に用いられる誘電体
フィルタに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a dielectric filter used in mobile communication devices such as mobile phones.
従来の技術
従来の誘電体フィルタを第５図、第６図によって説明す
る。2. Description of the Related Art A conventional dielectric filter will be explained with reference to FIGS. 5 and 6.
角筒形状の誘電体同軸共振器１３は開放端面以外の片端
面、外周面および内周面全体に銀メタライズにより電極
が施されている。誘電体同軸共振器１３の孔内には金属
からなる中心金具１４が挿入され、電気的に接続されて
いる。結合コンデンサ基板１５はアルミナのような高周
波特性のすぐれた誘電体基板で形成され、表裏には結合
容量を形成するための次のような電極が形成さている。The rectangular cylindrical dielectric coaxial resonator 13 has electrodes formed of silver metallization on one end surface other than the open end surface, the entire outer circumferential surface, and the inner circumferential surface. A center fitting 14 made of metal is inserted into the hole of the dielectric coaxial resonator 13 and electrically connected. The coupling capacitor substrate 15 is formed of a dielectric substrate having excellent high frequency characteristics such as alumina, and the following electrodes for forming coupling capacitance are formed on the front and back sides.
すなわち、第６図のごとく、結合コンデンサ基板１５の
片面には入力電極１６、出力電極１７が形成され、他の
片面には前記入力電極１６、出力電極１７と対向するよ
うな電極１８、電極１９が形成され、入出方間容量の役
目をしている。また、電極１８と前記電極１９は第６図
ら）のごとく相互に対向したくし歯状となっており、前
記誘電体同軸共振器１３間の結合の役目を持つ段間結合
容量を形成している。前記誘電体同軸共振器１３は、前
記結合コンデンサＩ５に設けられた孔に中心金具１４を
挿入し、はんだ付けして前記結合コンデンサ１５の電極
１８．１９と接続されている。That is, as shown in FIG. 6, an input electrode 16 and an output electrode 17 are formed on one side of the coupling capacitor substrate 15, and an electrode 18 and an electrode 19 facing the input electrode 16 and output electrode 17 are formed on the other side. is formed and serves as a capacitor between input and output. Further, the electrode 18 and the electrode 19 have a comb-teeth shape facing each other as shown in FIG. . The dielectric coaxial resonator 13 is connected to the electrodes 18 and 19 of the coupling capacitor 15 by inserting a central metal fitting 14 into a hole provided in the coupling capacitor I5 and soldering.
また、人、出力端子２０が前記結合コンデンサ基板１５
の別の孔に挿入され、人、出力電極１６、エフにはんだ
付けされている。金属からなるケース２１はアース端子
２２を有し、前記誘電体同軸共振器１３の外周導体とは
んだ付は等で電気的に固定されている。In addition, when the output terminal 20 is connected to the coupling capacitor board 15
is inserted into another hole of the output electrode 16, and is soldered to the output electrode 16, F. A case 21 made of metal has a ground terminal 22, which is electrically fixed to the outer circumferential conductor of the dielectric coaxial resonator 13 by soldering or the like.
発明が解決しようとする課題
以上、説明した構造において、近年の小型化指向に対し
て製品を小さくするために結合コンデンサ基板１５の外
形寸法を小さくすると、結合容量が不足してしまうとテ
う課題がある。そこで、容量値が結合コンデンサ基板１
５の誘電率と、人、出力電極１６．１７、電極１８．１
９の面積に比例し、結合コンデンサ基板１５の厚みに反
比例することを考慮して結合コンデンサ基板１５の厚み
を薄くすることが考えられるが、基板の強度が弱くなる
ために限界がある。結局結合コンデンサ基板１５はあま
り薄くできず、それにより結合コンデンサ基板の外形寸
法を小さくすることが難しく、小型化を実現する妨げと
なっていた。Problems to be Solved by the Invention In the structure described above, when the external dimensions of the coupling capacitor substrate 15 are reduced in order to make the product smaller in response to the recent trend towards miniaturization, the problem is that the coupling capacitance becomes insufficient. There is. Therefore, the capacitance value of the coupling capacitor board 1
Dielectric constant of 5, person, output electrode 16.17, electrode 18.1
Considering that the thickness of the coupling capacitor board 15 is proportional to the area of the coupling capacitor board 9 and inversely proportional to the thickness of the coupling capacitor board 15, it is possible to reduce the thickness of the coupling capacitor board 15, but there is a limit because the strength of the board becomes weak. In the end, the coupling capacitor substrate 15 could not be made very thin, and as a result, it was difficult to reduce the external dimensions of the coupling capacitor substrate, which was an obstacle to realizing miniaturization.
本発明は以上のような従来の課題を改善するものであり
、小型の誘電体フィルタを提供することを目的とするも
のである。The present invention is intended to improve the conventional problems as described above, and aims to provide a small dielectric filter.
課題を解決するための手段
そしてこの目的を達成するために本発明は、結合コンデ
ンサ基板に、表裏に電極を持つ少なくとも一枚のコンデ
ンサ基板を重合させ、このコンデンサ基板の表裏の電極
間に形成される容量成分は、前記入、出力電極とその対
向電極間の少なくとも一方に形成される容量成分に対し
て電気的に並列接続したものである。Means for Solving the Problems and In order to achieve this object, the present invention involves superimposing at least one capacitor substrate having electrodes on the front and back surfaces of the coupling capacitor substrate, and forming a capacitor substrate between the front and back electrodes of the capacitor substrate. The capacitance component is electrically connected in parallel to the capacitance component formed between the input and output electrodes and at least one of the opposing electrodes.
作用
この技術的手段により、結合容量を付加することができ
、その付加した容量分だけ結合コンデンサ基板の外形寸
法を小さ（することが可能となり、小型化が達成できる
。Effect: With this technical means, it is possible to add a coupling capacitance, and the external dimensions of the coupling capacitor board can be reduced by the added capacitance, thereby achieving miniaturization.
実施例
以下、本発明の一実施例を添付の図面第１図〜第４図に
よって説明する。EXAMPLE Hereinafter, an example of the present invention will be described with reference to the accompanying drawings FIGS. 1 to 4.
第１図において、結合コンデンサ基板１はアルミナのよ
うな高周波特性のすぐれた誘電体基板により形成されて
いる。この結合コンデンサ基板１の一面には第２図、第
３図（ａ）のごとく入力電極２、出力電極３が形成され
、他面には前記入力電極２、出力電極３とそれぞれ結合
コンデンサ基板１を介して対向するような電極４、電極
５が形成されている。前“記結合コンデンサ基板１の底
面には第４図（ａｌ、（ｂ）に示す前記コンデンサ基板
６を配置している。このコンデンサ基板６は誘電体から
なり、表裏には電極７、電極８が形成されている。この
状態で人、出力端子９をそれぞれの基板６．１の孔に挿
入した上、前記結合コンデンサ基板１の入力電極２、出
力電極３と前記入、出力端子９の上端、および前記結合
コンデンサ基板１の電極４、電極５とそれぞれ前記コン
デンサ基板６の電極７、および前記コンデンサ基板６の
電極８と前記入、出力端子９の中部とを夫々はんだ付は
等により電気的に接続している。これにより、コンデン
サ基板６の容量分が、入力電極２と電極４間の容量分、
および出力電極３と電極５間の容量に電気的に並列に接
続される。再び第１図に戻って、角筒からなる誘電体同
軸共振器１０は開放端面以外の片端面、外周面および内
周面全体には銀メタライズにより電極が施されている。In FIG. 1, a coupling capacitor substrate 1 is formed of a dielectric substrate having excellent high frequency characteristics, such as alumina. As shown in FIGS. 2 and 3(a), an input electrode 2 and an output electrode 3 are formed on one surface of the coupling capacitor substrate 1, and the input electrode 2 and output electrode 3 are formed on the other surface of the coupling capacitor substrate 1, respectively. An electrode 4 and an electrode 5 are formed so as to face each other with a gap between them. The capacitor board 6 shown in FIGS. 4A and 4B is arranged on the bottom surface of the coupling capacitor board 1. This capacitor board 6 is made of a dielectric material, and has electrodes 7 and 8 on the front and back sides. In this state, the output terminals 9 are inserted into the holes of each board 6.1, and the input electrodes 2 and output electrodes 3 of the coupling capacitor board 1 are connected to the upper ends of the input and output terminals 9. , and the electrodes 4 and 5 of the coupling capacitor board 1 and the electrodes 7 of the capacitor board 6, and the electrodes 8 of the capacitor board 6 and the middle parts of the input and output terminals 9, respectively, are electrically connected by soldering or the like. As a result, the capacitance of the capacitor board 6 is equal to the capacitance between the input electrode 2 and the electrode 4,
and is electrically connected in parallel to the capacitance between the output electrode 3 and the electrode 5. Returning again to FIG. 1, the dielectric coaxial resonator 10 made of a rectangular tube has electrodes formed of silver metallization on one end surface other than the open end surface, and on the entire outer circumferential surface and inner circumferential surface.
前記誘電体同軸共振器１０の孔内に金属からなる中心金
具１１が挿入され、前記中心金具１１の他の一端は前記
結合コンデンサ基板ｌの電極４、電極５にはんだ付は等
により接続されている。金属からなるケース１２はアー
ス端子を有し、前記誘電体同軸共振器１０の外周導体と
はんだ付は等で電気的に固定されている。A central metal fitting 11 made of metal is inserted into the hole of the dielectric coaxial resonator 10, and the other end of the central metal fitting 11 is connected to the electrodes 4 and 5 of the coupling capacitor board l by soldering or the like. There is. A case 12 made of metal has a ground terminal, and is electrically fixed to the outer circumferential conductor of the dielectric coaxial resonator 10 by soldering or the like.
発明の効果
以上のように本発明によれば、結合コンデンサ基板に重
合したコンデンサ基板の容量付加により、結合コンデン
サ基板の外形寸法を小さくすることができ、その結果、
小型の誘電体フィルタを提供できるものとなる。Effects of the Invention As described above, according to the present invention, by adding the capacitance of the capacitor substrate superimposed on the coupling capacitor substrate, the external dimensions of the coupling capacitor substrate can be reduced, and as a result,
This makes it possible to provide a small dielectric filter.
第１図は本発明の一実施例の誘電体フィルタの一部切欠
正面図、第２図はその結合コンデンサ基板の正面図、第
３図（ａ）、ｂ）は同結合コンデンサ基板の上面図と下
面図、第４図（ａ）、（ｂ）はその結合コンデンサ基板
の上面図と下面図、第５図は従来の誘電体フィルタの一
部切欠正面図、第６図（ａ）、（ｂ）はその結合コンデ
ンサ基板の上面図と下面図である。
１・・・・・・結合コンデンサ基板、２．３・・・・・
・人、出力電極、４．５・・・・・・電極、６・・・・
・・コンデンサ基板、９・・・・・・人、出力端子、１
０・・・・・・誘電体同軸共振器。
代理人の氏名 弁理士 粟野重孝 はか１名結合フンテ
ン１基板
コンチンＶ羞坂
入出力鳩子
ｖｋｔ停同軸亮播蔦
第
第
図
図
第
図
第
図
／Figure 1 is a partially cutaway front view of a dielectric filter according to an embodiment of the present invention, Figure 2 is a front view of its coupling capacitor board, and Figures 3 (a) and b) are top views of the same coupling capacitor board. 4(a) and 4(b) are top and bottom views of the coupling capacitor board, and FIG. 5 is a partially cutaway front view of a conventional dielectric filter. b) is a top view and a bottom view of the coupling capacitor board. 1... Coupling capacitor board, 2.3...
・Person, output electrode, 4.5...electrode, 6...
...Capacitor board, 9...Person, output terminal, 1
0...Dielectric coaxial resonator. Name of agent: Patent attorney Shigetaka Awano 1 person 1 person connection
Claims (1)
出力電極の夫々に対向する電極を有する結合コンデンサ
基板と、この結合コンデンサ基板に取付けられるととも
に、前記電極に夫々電気的に接続された複数の誘電体同
軸共振器とを備え、前記結合コンデンサ基板に、表裏に
電極を持つ少なくとも一枚のコンデンサ基板を重合させ
、このコンデンサ基板の表裏の電極間に形成される容量
成分は、前記入、出力電極とその対向電極間の少なくと
も一方に形成される容量成分に対して電気的に並列接続
した誘電体フィルタ。It has an input electrode and an output electrode on one side, and the input electrode on the other side.
A coupling capacitor substrate having an electrode facing each of the output electrodes, and a plurality of dielectric coaxial resonators attached to the coupling capacitor substrate and electrically connected to the electrodes respectively, , at least one capacitor substrate having electrodes on the front and back surfaces is polymerized, and the capacitance component formed between the front and back electrodes of this capacitor substrate is the capacitance component formed between the input and output electrodes and at least one of the opposing electrodes. A dielectric filter that is electrically connected in parallel to the components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13505290A JPH0430603A (en) | 1990-05-24 | 1990-05-24 | Dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13505290A JPH0430603A (en) | 1990-05-24 | 1990-05-24 | Dielectric filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0430603A true JPH0430603A (en) | 1992-02-03 |
Family
ID=15142800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13505290A Pending JPH0430603A (en) | 1990-05-24 | 1990-05-24 | Dielectric filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0430603A (en) |
-
1990
- 1990-05-24 JP JP13505290A patent/JPH0430603A/en active Pending
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